Best WiFi setup for campgrounds?

I run the FamCamp at Beale AFB, CA and we have been trying to update/fix our wifi setup for a while now and still hitting dead ends. We've tried 3 different set ups, upped our bandwidth to 150mb (the highest available for Comcast Bus) and still cant seem to get enough signal to the back of our park using bridges and repeaters. Our question is does anyone know of a local company that could come out to Beale and setup a system that would work, needs to be unlimited, and give everyone decent coverage? Also curious if anyone knows of other FamCamps that have a good internet setup and what they are using.

I'm reading this over the wifi network at Malmstrom AFB off-base FamCamp. I'm at one end of the park and got 2 bars without my signal booster Alfa antenna hooked-up. It appears they have just one pole for the wifi which is about in the middle of the park. You may want to contact the Outdoor Rec folks here and find out what system they are using.

Bob Hicks, from Utah
I’m 76 years young and going as hard as I can for as long as I can.
“Free men don't ask permission to bear arms.” ― Glen Aldrich